소각로 배출가스 중 수은화합물의 무기성 및 유기성 흡착제를 이용한 흡착성능 실험

Abstract

Experiments were performed on the adsorption of mercury from the incineration flue gas by various adsorbents, including inorganic adsorbents, for example zeolites. Four different materials were tested as adsorbents of mercury in both the laboratory-scale test rig and the test facility using real incineration offgas, which was connected to the offgas line of TAMARA facility of Research Center Karlsruhe(FzK), Germany. The incinerator offgas was similar to the real offgas from waste incinerator. the concentrations of NO, CO, O2, CO2, H2O, HCl, were monitored as well as mercury concentration by Hg-MATⅡ developed by FzK. Mercury adsorbed by carbon, wood char as well as by commercial activated carbon was much larger than that by inorganic adsorbents, for example, natural zeolite and bentonite. Test results in the lab-scale test rig also gave the similar conclusion that inorganic adsorbents were not effective for mercury adsorption. The wood char from the gasification process of waste wood will be a possible alternative of the commercial activated carbon adsorbent.